Abstract
A procedure is proposed for generating rigorous closed-form orthonormal bases for the expansion of strongly focused (high-numerical-aperture), monochromatic, electromagnetic fields. The performance of three such bases is tested in terms of a parameter that determines their directional spread, for several truncation orders. Simple example fields corresponding to beams with differing polarizations focused by a thin lens are expanded in terms of these bases.
© 2009 Optical Society of America
Full Article | PDF ArticleMore Like This
Nicole J. Moore and Miguel A. Alonso
J. Opt. Soc. Am. A 26(7) 1754-1761 (2009)
Rodrigo Gutiérrez-Cuevas and Miguel A. Alonso
Opt. Express 25(13) 14856-14870 (2017)
Matthew R. Foreman and Peter Török
J. Opt. Soc. Am. A 26(11) 2470-2479 (2009)